Space Environment
From TeamFrednetWiki
This document intends to cover all general characteristics of cislunar space that are relevant to the mission.
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Temperature
Outer Space - that vacuum which is beyond the limits of Earth's atmosphere and beyond the shielding of the Van Allen Radiation Belts - has no temperature of course, since temperature is a measurement of degree of atomic excitation. Objects within the Outer Space environment are however infused with temperature based on their exposure to sources of radiation. Within the Earth-Luna planetary system, most of that radiation comes in the form of light and heat received from Sol (the Sun). Extreme differences in temperature tend to occur between the sides of objects exposed to Sol's radiation as compared with the sides that are turned away from Sol. These differences were measured by scientists who exposed animals to the harsh environment of space without any protective shielding. They determined that the side of a dog facing Sol reached a temperature of 200 degrees Fahrenheit very rapidly, while the side facing away from Sol was cooled to a temperature of -200 degrees Fahrenheit. (Citations needed.)
Space Temperature: -270,43°C = 2,72K
Side of a body facing sun in space (dependening on reflexion): approx. 120°C (white body)
Related links
- NASA/SP-8105, Spacecraft thermal control, NASA SPACE VEHICLE DESIGN CRITERIA (Environment), NASA (Washington, DC, United States), May, 1973, pp. 48, Format(s): PDF 2497k Summary: External Thermal environment
Radiation
Main article: Space Radiation
Gravitational fileld
In the following study we take into account the gravity field sensed by the Lunar Bus in the path from the Earth to the Moon. We have used a 3 body problem; the system is composed by the Sun, the Earth and the Moon. The Lagrangian Point L1 is the maximum potential (minimum gravity) in between the Earth and the Moon.
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